.tab {
	.nav {
    
    height: 50px;
    border-bottom: 1px solid #000;

		.nav-item {
      float: left;
      width: 33.33%;
      height: 100%;
      text-align: center;
      line-height: 50px;

      &.current {
      	background-color: #000;
      	color: #fff;
      }
		}
	}
}